Low height USB interface connecting device and a memory storage apparatus thereof

ABSTRACT

A connecting device with a low height comprises a connector part, and a set of metal terminals. The connector part has a height compatible with the height of an inner space in a standard USB interface slot socket so as to be inserted into the standard USB interface slot socket. The set of metal terminals is arranged on the connector part and composed of a plurality of metal sheets and each metal sheet has an end disposed in the connector part and another end extending outward the connector part. The first end of the respective metal sheet in the set of metal terminals contacts with internal electronic signal of the standard USB interface slot socket and the second end of the respective metal sheet is soldered to a printed circuit board. Furthermore, the low height connecting device can be revised as an electronic connecting device capable of being inserted into the USB slot socket so that both of the connecting devices can be used in a dual interface memory storage apparatus or a memory storage apparatus.

BACKGROUND OF THE INVENTION

[0001] 1. Field of the Invention

[0002] The present invention relates to a low height USB interfaceconnecting device and a memory storage apparatus thereof.

[0003] 2. Description of Related Art

[0004] Currently, a great variety of memory cards are available forelectronic products and even if same type products are made fromdifferent designs, the memory card in the respective product isdifferent from each other. Although it is so, the various memory cardshave a common feature that the digital data in the memory cards can betransmitted to the computer for data processing.

[0005] In order to be capable of reading data in the memory cards,various card readers are provided to adapt different memory cards suchas a compact flash card, a SD card, a MMC card and etc. before the datacan be processed with the computer. But, the arrangement makes the userinconvenient. Of course, a type of card reader is capable of supportingmore specifications of memory cards but it is expensive to give a greatfinancial burden to the user.

[0006] Therefore, as one of computer periphery, how to make the memorycard, which is able to improve and reduce using the card reader and iscompatible with the computer interface with the existing system hardwarefor being used with more facility and in accordance with our usualoperation practice, is a subject worth us to deeply concern.

SUMMARY OF THE INVENTION

[0007] The USB interface is most widely applied for data transmissionbetween a computer and a card reader among a lot of computer peripheryinterfaces so that an object of the present invention is to provide amemory card with a function of USB interface card reader, that is, thememory card can be inserted into a USB slot socket to execute a signalchange and connection with the computer without the need of a USBinterface card reader.

[0008] In order to reach the preceding object, a connector with a lowthickness is disclosed first and the connector is compatible with andinserted into a USB slot socket in spite of being not in accordance withthe industrial standard for a USB connector. Because various memorycards available provide a very thin thickness respectively, the standardUSB interface connector provides a too much high thickness to be builtup with a memory card. This is a reason that the standard USB connectoris revised in the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS

[0009] The present invention can be more fully understood by referenceto the following description and accompanying drawings, in which:

[0010]FIG. 1 is a perspective view illustrating a conventional USBconnector (left side) and an inserted socket (right side);

[0011]FIG. 2 is a perspective view of a low height USB connectoraccording to the present invention;

[0012]FIG. 3 is a block diagram of circuit for dual interface memorycard device with low height USB connector of the present invention;

[0013]FIG. 4 is a perspective view illustrating an embodiment of thedual interface memory card with low height USB connector of the presentinvention;

[0014]FIG. 5 is a perspective view illustrating an embodiment of the USBinterface memory card with low height USB connector of the presentinvention;

[0015]FIG. 6 illustrates a disassembled perspective view and anassembled perspective view of a planar electrode contact without USBconnector according to the present invention;

[0016]FIG. 7 is a system block diagram of a planar electrode contactwithout USB connector of USB interface memory card according to thepresent invention;

[0017]FIG. 8 is a perspective view of a planar electrode contact withoutUSB connector of USB interface memory card according to the presentinvention;

[0018]FIG. 9 is a system block diagram of a dual interface memory cardwith a planar electrode contact without USB connector according to thepresent invention;

[0019]FIG. 10 is a lateral sectional view of the dual interface memorycard with a planar electrode contact without USB connector of thepresent invention;

[0020]FIG. 11 is a disassembled perspective view of the dual interfacememory card of the present invention;

[0021]FIG. 12 is a top view of the dual interface memory card of thepresent invention;

[0022]FIG. 13 is a bottom view of the dual interface memory card of thepresent invention;

[0023]FIG. 14 is a perspective view of the dual interface memory card ofthe present invention illustrating a cover guard being attached to thememory card;

[0024]FIG. 15 is a schematic diagram illustrating a framework ofinterface signal according to the present invention; and

[0025]FIG. 16 is a circuit diagram based on the framework of interfacesignal.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0026] Referring to FIG. 1, in order to explain the principle of thepresent invention in detail, a traditional USB interface connector isdescribed first. It can be seen in FIG. 1 that a plug of the connectorend is at the left side and a slot socket of the host end is at theright side. Wherein, the reference numbers 104A and 104B are designatedas a casing of the plug and a casing of the slot socket for shieldingelectronic signals.

[0027] Referring to FIG. 2, a USB low height connector 100 according tothe present invention comprises a metal terminal 101, two jut pieces 102and a connector part 103. The metal terminal 101 is composed of aplurality of metal sheets, which are the same as the metal sheets in thestandard USB interface connector regardless in number, distance andsize. The connector part 103 is different from the standard USBinterface connector in that at both lateral sides of the connector part103 are fixedly attached with the jut pieces 102 respectively orintegrally extend the jut pieces 102 respectively. The connector part103 is provided with a thickness same as the height of the inner spacein the standard USB interface slot socket (“h” in FIG. 1) such that theconnector part 103 can be inserted into the slot socket so as totransmit the signal. The respective jut piece 102 is used for preventingan incorrect signal connection resulting from the connector part 103being inserted into the slot socket inversely so that the entireconnector has a height much lower than the height of the standard USBconnector. Besides, the connector part 103 can provide an externalrecess (102A in FIG. 2) to reinforce an engaging strength thereof duringbeing inserted into the standard USB interface, like standard USBconnector, and the connector 100 can be associated with a print circuitboard 201 by way of soldering directly such that a state of closecircuit can be obtained.

[0028] Comparing to FIG. 1, it can be seen in FIG. 2 that the connector100 of the present invention does not provide the casing 104A shown inFIG. 1 so that the thickness of the connector 100 can be reducedgreatly. Originally, the casing 104A is provided for shielding anddecreasing an effect of signal delay generating from the USB cable,Because the connector 100 is located on the memory card, no traditionalUSB cable is needed, the casing, which has the function for insulatingthe shielding signal, can be removed from the connector part 103 of thepresent invention. Hence, the USB interface connector can be flattenedand the USB interface product can be developed toward a trend of cardshaped type. A further explanation will be described hereinafter.

[0029] Referring to FIG. 3, a block diagram of circuit in the dualinterface memory card device disclosed in the present invention isillustrated. It can be seen that the memory card has two digital datatransmission interfaces, an application system interface and a USBinterface. The data is saved in an internal memory 160 after the data istransmitted to the memory card from the applied system via the systemconnector 150. Once the memory card is taken out from the appliedsystem, the previous designed USB low height connector 100 can be usedfor connecting with the USB interface of the computer main unit. Thatis, as soon as the memory card is inserted into the USB slot socket ofthe computer, the data is possible to transmit to the computer main unitwithout via the USB lead wire and the USB interface card reader.Wherein, a dual interface controller 140 provides a function of relatedapplied system interfaces changing to the USB interface.

[0030] Referring to FIG. 4, one of typical examples of the dualinterface memory card according to the present invention in practice isillustrated. It can be seen that a memory card 70 attached with a coverguard 71 provides the same size as an ordinary memory card capable ofbeing used in an applied system. In case of the memory card 70 beingtaken out from the system, the exposed connector 72 can be inserted intothe USB interface slot socket as long as the cover guard 71 is detached.It is pretty convenient while in use.

[0031] Accordingly, the preceding low height connector can be utilizedto guide the USB signal to and to write data into the memory carddirectly and vice versa. In this way, a memory card with two differentinterface connectors is completed. Meanwhile, a read only switch 73 anda signal light 75 is placed at the external part of the memory card fordata security. When the switch 73 is shifted to the read only mode, thememory card only offers a function of data read so that it is notpossible to write the data into the memory card. Once the switch 73 isshifted to the normal mode, the memory card can be used normally with afunction of read and write and the signal light 75 is used to indicatethe working status of the USB device.

[0032] In order to simplify the entire system further and theapplication system interface being deleted, the USB interface system canbe remained unchanged and the low height connector can be made as asuper thin USB interface memory card as shown in FIG. 5. It can be seenthat the USB interface memory card shown in FIG. 5 is provided with alighter, thinner, shorter and smaller size in contrast to a memorydevice with current standard USB interface connector. It means thetraditional USB interface memory device can be flattened in shape by wayof the technique disclosed in the present invention so that it can be aninnovative product design.

[0033] Referring to FIG. 2 again, the signal may enter the memorystorage apparatus after passing through the metal terminal 101 of theconnector 100 by way of the terminal 101 being soldered to metalconductive pads of the printed circuit board 201. It is known thatsoldered joints on the circuit may result in a change of impedance oftransmission line to influence the high-speed transmission for data.Hence, how to remove the soldered joints is another object of thepresent invention. A way to eliminate the soldered joints can be done byway of the signal touching the metal conductive pieces of the printedcircuit board in the memory storage apparatus via the USB terminal ofthe main unit instead of using a connector. This is a design concept ofso-called golden finger recognized by the makers, that is, the directcontact is used instead of the connector for circuit connection toenhance the electronic feature of the memory storage apparatus duringperforming high-speed transmission.

[0034] Referring to FIG. 6, a principle of design with no connector isillustrated further. A planar electrode contact without USB connector110 with a USB contact end is shown in FIG. 6 and the entire height ofthe connector 110 can be received in the USB slot socket of the mainunit after a printed circuit board 202 being associated with a base 113and the fool proof jut piece 112 is integral with the casing 114 anddisposed at two opposite lateral sides of the printed circuit board 202.The metal connective pieces 111 laid out on the printed circuit board202 are utilized to replace the metal terminal 101 shown in FIG. 2.Hence, once the preceding connector is assembled, it provides a functionsame as the connector shown in FIG. 2 so that the planar electrodecontact 110 can be used instead of the traditional USB connector anddeficiency generated from the soldered joints on the circuit can beeliminated completely. In addition, the process for setting up theproduct during production operation can be simplified substantially.Besides, the base 113 can also provide an external recess (112A in FIG.13) to reinforce an engaging strength thereof during being inserted intothe standard USB interface, like standard USB connector.

[0035] Referring to FIG. 7, a system block diagram of the USB memorycard system according to the present invention is illustrated. Thesystem 500 comprises a printed circuit board with USB gold contacts 501,a USB controller 502 and a memory components array 503. As theforegoing, the signal in the storage apparatus dose not pass through theconnector and the soldered joints any more and connects with USB metalterminal of the host connector to form a close circuit.

[0036] Referring to FIG. 8, a USB interface data storage apparatus witha USB interface planar electrode contact, which is disclosed in thepresent invention, is illustrated. The thickness of the memory storageapparatus shown in FIG. 8 has greatly reduced and it effectivelyenhances the portability with more facility. The planar electrodecontact without USB connector 300A is formed by way of the sameprinciple of design as shown in FIG. 6. A signal light 114A is arrangedon the memory card for indicating the working status of the storageapparatus. A read only switch 202C is provided to prevent the data frombeing covered or deleted accidentally so that the security for data canbe enhanced effectively.

[0037] From the preceding method, a new USB storage apparatus isdisclosed further and the new USB memory storage apparatus not onlyprovides a much lower height than that used in the conventional USBconnector but also does not need the connector to reduce extra solderedjoints.

[0038] Furthermore, the USB interface planar electrode contact disclosedin the present invention can be mounted to various currently used memorystorage apparatus to lower down the height of the standard USB connectorpart such that it is capable of being developed a novel storageapparatus with two different interface connectors. The novel storageapparatus with two different connectors will be described furtherhereinafter. Referring to FIG. 9, a system block diagram for a memorystorage apparatus with the preceding USB interface connector such as amemory stick card, a SD card, etc. and with an application system.Wherein, the system 500A comprises a preceding USB planar electrodecontact 504, a connector 505 for a conventional application system, acontroller 506 with dual interface signal switch for changing data toUSB signal and application interface signal and a group of memory array507.

[0039] In order to explain a real design of the block diagramillustrated in FIG. 9, the memory stick card is taken as an example forthe system design and the design method disclosed hereinafter also canbe applied to other memory storage apparatus as long as a framework canbe arranged properly. Referring to FIG. 10, it can be seen from thesectional view of the memory stick card that there is a USB signalcontact end 300 provided for reading and writing USB signal and there isan interface end 400 of the memory stick card (application system)provided with different specifications depending on different memorycards. That is, the memory storage apparatus is capable of having twodifferent interface ends, a USB interface end and an applicationinterface end, wherein, the USB interface end acts as an interface forbeing connected to the host end signal and the application interface endsuch as MMC, SD, . . . , and etc. for connecting signal between thedevice and the application system.

[0040] When the memory storage apparatus shown in FIG. 10 has performedthe job thereof in the application system of the memory stick card andis taken out from the system, a USB interface connector 300 at anotherend thereof can send data to the computer via the USB interface. The USBinterface connector 300 can be inserted into host USB slot socket sothat it is not necessary to carry out the data transmission via a cardreader. A printed circuit board 202 on the surface thereof bears circuitcomponents 202A and the casings 114 and 113A enclose the printed circuitboard 202. Gold contacts 111, 111A are arranged on the printed circuitboard 202 and form as a USB contact conductor and a contact conductor ofthe memory stick card.

[0041] It is summarized from the preceding description that the presentinvention discloses how to reduce the height of the USB connector inFIG. 2 for being capable of applying to the existing memory card andfurther discloses how to remove the connector for decreasing the numberof soldered joints on the circuit and enhancing the performance of thecircuit with a moderate reluctance under high speed signal transmission.

[0042] Referring to FIG. 11, it can be seen from the disassembledperspective view that the memory storage apparatus, for instance, thememory stick card, provides a printed circuit board 202 and two casings114 and 113A. It is learned from the block diagram in FIG. 9 and thedisassembled perspective view that the USB interface connector is notincluded in the memory storage apparatus of the present invention anymore, and a signal light 114A can be fixedly attached to the casing 114to indicate the work status of the memory storage apparatus as thepreceding embodiment does. In addition, a read only switch 202B isarranged on the memory storage apparatus to prevent the data from beingwritten, covered or deleted in case of the read only switch 202B beingshifted to a proper mode. Referring to FIGS. 12 and 13, it can belearned from the top view and the bottom view of the memory storageapparatus that two different interface contacts 300, 400 are providedand the interface contact 300 is a USB interface contact arranged on thememory card in accordance with the design way disclosed in the presentinvention so that it allows the memory card to keep the feature of lowheight. Further, a cover guard can be added to protect parts of the USBcontact. FIG. 14 shows a movable cover guard 301, which may bedetachable or fixedly attached to connector.

[0043] As the foregoing, if the interface at the application system endis removed and the USB interface remains unchanged, a memory storageapparatus with USB interface only can be formed. Comparing to a memorystorage apparatus with conventional USB interface, the memory storageapparatus according to the present invention is much thinner, lightershorter and smaller in size for being carried about easily. Therefore,it is hardly said the present invention is not a novel, creative andadvanced invention.

[0044] The planar electrode contact USB connecting device disclosed inthe present invention provides no connector and has to satisfyportability especially in practice so that it is necessary to consider atime difference between the work status of the interface controller andthe work status displayed by the system, that is, it is possible tocause a time difference between the work status displayed by the systemand the work status of the real device. This is a point has to beconfirmed strictly for the design of detachably portable device,otherwise, it is very likely to mislead the user due to individualdifferent system design such that the device is detached accidentallybefore completing the job thereof to result in the data in device beingdamaged.

[0045] However, the standard USB interface signal is not sufficient tooffer a solution so that a new interface signal is designed in thepresent invention to solve the preceding problem thoroughly. Referringto FIG. 15, an interface signal framework 508 (corresponding to thecircuit board 202 in FIG. 6) comprises a power supply (V_(bus)) foroffering a working voltage, a signal group including a D+ and a D−signals, a ground signal (power GND) to constitute a standard USBinterface signal group. The difference of the present invention from theconventional USB interface signal is that an apparatus work signal groupis provided additionally. The work signal group supplies a work signalfor indicating the work status of the apparatus and the D+ and D−signals are data signals in accordance with the specification of thestandard USB interface. The apparatus work signal group is supplied bythe apparatus end connects with the controller of the apparatus end byway of a necessary circuit.

[0046] Wherein, the power supply (V_(bus)) can support 5 volts, 3.3volts, 2.5 volts and 1.8 volts so that it is possible for the powersupply to offer a working voltage in different specifications. Theapparatus working signal group includes a work signal W/R and a powerproviding signal P. In case of the device being designed as a memorystorage apparatus such as the USB memory card, the work signal W/Rindicates if there is any data being transmitted on the interface(read/write). In case of the device being input/out apparatus such as aUSB network card, the work signal W/R indicates if there is any databeing transmitted on the interface (upload/download).

[0047] Referring to FIG. 16, a circuit diagram with an interface signalframework is illustrated. The W/R work signal is supplied by aninterface controller 509 and as soon as the data is transmitted on theUSB interface, a signal light such as LED arranged at the external partof the device can be triggered via the W/R signal. Hence, the user canconfirm the actual work status of the interface controller through anexternal signal light 114C to prevent the device from being removed fromthe system accidentally.

[0048] When the device is used for the standard USB interface slotsocket, the standard USB interface does not support W/R signal so thatthe device itself has to have a data signal light. Meanwhile, the W/Rsignal can trigger a signal light 114A arranged in the device. By thesame token, the power providing signal P provides the same principle ofbeing actuated. Referring to FIG. 16 again, as soon as the USB interfaceis inserted, the interface controller 509 can offer a power providingsignal P to trigger a signal light 114D arranged on the host. The signallight 114D is used for indicating if the device is in a state ofelectricity consuming work or in a state of electricity consuming alert.Similarly, the providing signal P can also trigger the power signallight 114B arranged in the device.

[0049] While the invention has been described with reference to apreferred embodiment thereof, it is to be understood that modificationsor variations may be easily made without departing from the spirit ofthis invention, which is defined in the appended claims.

What is claimed is:
 1. A connecting device with a low height, comprisesa connector part, having a height thereof compatible with a height of aninner space in a standard USB interface slot socket so as to be insertedinto the standard USB interface slot socket; and a set of metalterminals, being arranged on the connector part, being composed of aplurality of metal sheets, each of the metal sheets having a first endbeing disposed in the connector part and a second end extending outwardthe connector part; whereby, the first end of the respective metal sheetin the metal terminal assembly contacts with internal electronic signalof the standard USB interface slot socket and the respective second endis soldered to a printed circuit board or a signal connecting lines as asoldered joint such that a circuit loop can be formed.
 2. The connectingdevice with a low height according to claim 1, wherein a set of jutpieces are fixedly attached to both lateral sides of the connector partfor preventing the connecting device from being inserted into the slotsocket in an incorrect direction.
 3. The connecting device with a lowheight according to claim 1, wherein the metal terminal assemblyprovides four independent and disconnecting gold contacts for connectingwith the electronic signal.
 4. The connecting device with a low heightaccording to claim 1, wherein the connector part provides an externalrecess to reinforce an engaging strength thereof during being insertedinto the standard USB interface.
 5. A low height USB interface memorystorage apparatus, comprising: a casing, receiving and bearing followingcomponents; a printed circuit board, being arranged in the casing,providing a layout of lead wire circuit; a memory array, at leastcomprising a memory component as a data storage apparatus; a controller,being disposed in the casing, being provided with a layout of requiredcircuit for completing transmission and change between USB interfacesignal and data signal and performing data saving into the memory array;and an interface connector, being different from the standard USBinterface connector but capable of being inserted into a USB slotsocket, exposing outward the casing, providing a soldering joint toconnect with the printed circuit board.
 6. The storage apparatusaccording claim 5, wherein the interface connector is the same as thelow height connecting device defined in claim
 1. 7. The storageapparatus according claim 5, wherein the memory component is providedwith a read only switch or device exposing externally.
 8. The storageapparatus according claim 5, wherein a signal light is mountedexternally.
 9. The storage apparatus according claim 5, wherein adetachable cover guard is provided to fit with and protect theconnector.
 10. A memory storage apparatus with dual interface connectingdevices, comprising a casing, receiving and bearing followingcomponents; a printed circuit board, being disposed in the casing andhaving a circuit layout of lead wires; a memory array, at leastcomprising a memory component and acting as data saving device; a dualinterface controller, changing data saved in an internal memory of beingdisposed in the housing, being provided with a required circuit forcompleting an interface signal change and transmitting data between aninterface and the memory component; a system interface connectingdevice, exposing outward the casing, providing wires to connect with theprinted circuit board, having an external pin holes or connecting pinsfor engaging with a slot socket of an application system; and anotherinterface connecting device, exposing outward the casing, providingsoldering joints to connect with the printed circuit board, having pinholes or connecting pins to engage with another interface slot socket.11. The storage apparatus according to claim 10, wherein the anotherinterface is a USB interface with an interface connecting device fixingto a USB signal end and the interface connector is the same as the lowheight connecting device defined in claim
 1. 12. The storage apparatusaccording to claim 10, wherein a read only switch or device is providedto expose externally.
 13. The storage apparatus according to claim 10,wherein a signal light is mounted externally.
 14. The storage apparatusaccording to claim 10, wherein a detachable cover guard is provided tofit with and protect the connector.
 15. An electronic signal connectingdevice for being inserted into a USB slot socket, comprising a printedcircuit board, providing a circuit layout thereon; a casing, providing asize for being associated with the printed circuit; a set of metal leadwires, being laid and formed on the circuit board, and exposing outwardthe connecting device after the printed circuit board being associatedwith the casing; whereby, a size and a height of the connecting deviceare compatible with an inner part of the USB slot socket so as to becapable of inserting into the USB slot socket.
 16. The connecting deviceaccording to claim 15, wherein a set of jut pieces are fixedly attachedto both lateral sides of the connector part for preventing theconnecting device from being inserted into the slot socket in anincorrect direction.
 17. The connecting device according to claim 15,wherein the metal lead wire part is composed of a set of parallel metallead wires and the width of each of the lead wires and a clearancebetween any two adjacent ones of the lead wires are in accordance withthe specification of USB interface terminal.
 18. The connecting deviceaccording to claim 15, wherein an external recess is provided toreinforce an engaging strength thereof during being inserted into thestandard USB interface.
 19. A memory storage apparatus without interfaceconnector, which can be inserted into a USB slot socket, comprising acasing, receiving following electronic components, and having anopening; a printed circuit board, providing a circuit layout withnecessary lead wires and having a set of metal lead wire part exposingoutward the casing; a set of memory array, at least comprising a memorycomponent for saving data; a USB controller, changing data in the memorycomponent into signal in accordance with a USB interface specificationand changing the USB signal into the data so as be saved in the memorycomponent, and connecting with the set of memory array to form a circuitloop.
 20. The storage apparatus according to claim 19, wherein aconnecting device same as the connecting device defined in claim 15 canbe formed with the metal lead wire part as soon as the casing isassociated with the printed circuit board.
 21. The storage apparatusaccording to claim 19, wherein a read only switch or device is providedto expose externally to prevent data being written into the storageapparatus.
 22. The storage apparatus according to claim 19, wherein asignal light is mounted externally for indicating a work status of reador write.
 23. The storage apparatus according to claim 19, wherein adetachable cover guard is provided to fit with and protect theconnector.
 24. A dual interface memory storage apparatus withoutinterface connector, which can be inserted into a USB slot socket,comprising a casing, receiving following electronic components, andhaving an opening; a printed circuit board, providing a circuit layoutwith necessary lead wires and having a set of metal lead wire partexposing outward the casing; a set of memory array, at least comprisinga memory component for saving data; a dual interface controller,changing data in the memory component into signal in accordance with aUSB interface specification and changing the USB signal into the data soas be saved in the memory component, and connecting with the set ofmemory array to form a circuit loop; and a conventional interfaceconnector or connecting device, being fixedly attached to the printedcircuit board but being not compatible with the USB interface.
 25. Thestorage apparatus according to claim 24, wherein a connecting devicesame as the connecting device defined in claim 15 can be formed with themetal lead wire part as soon as the casing is associated with theprinted circuit board.
 26. The storage apparatus according to claim 24,wherein a connector or connecting device same as an existing memory cardinterface connector or connecting device can be formed with the metallead wire part as soon as the casing is associated with the printedcircuit board.
 27. The storage apparatus according to claim 24, whereinthe existing memory card interface connector or connecting device isfixed to the printed circuit board and exposes outward the storageapparatus.
 28. The storage apparatus according to claim 24, wherein aread only switch or device is provided to expose externally to preventdata being written into the storage apparatus.
 29. The storage apparatusaccording to claim 24, wherein a signal light is mounted externally forindicating a work status of read or write.
 30. The storage apparatusaccording to claim 24, wherein a detachable cover guard is provided tofit with and protect the USB interface signal contact end
 31. Aninterface signal framework, comprising: a power supply (V_(bus)), foroffering a work voltage; a signal group, further comprising a D+ and aD− signals; a ground signal (Power GND); and a device work signal group,offering a work signal, for indicating a work status of the device;wherein, the D+ and D− signals are data signal in accordance with thestandard USB interface specification and the device work signal group isoffered by the device end and connects with a controller via a necessarycircuit.
 32. The interface signal framework according to claim 31,wherein the power supply offers a work voltage (V_(bus)) to support 5volts, 3.3 volts, 2.5 volts and 1.8 volts.
 33. The interface signalframework according to claim 31, wherein the device work signal furthercomprises a read/write or transmitting work signal for indicating a workstatus of the device.
 34. The interface signal framework according toclaim 31, wherein the device work signal group further comprises a powerproviding signal for indicating a status of power consumption.